The I-95 Fort McHenry Tunnel and I-895 Harbor Tunnel both have hazardous material and width & height restrictions. Vehicles carrying hazardous or explosive materials, including bottled propane gas in U.S. DOT approved containers larger than 10 pounds (maximum of 10 ten-pound containers) are prohibited from using both tunnels. It does not matter whether or not the bottles are empty or full. This is the case for personal and business usage. These vehicles should use the western section of I-695 around the tunnels. Note: Hazmat prohibitions and permissions within the tunnels are governed by the Code of Maryland Regulations (COMAR): Title 11, Subtitle 7, Chapter 1 (11.07.01). Based on COMAR, certain hazmats are permitted to travel the tunnels. Learn more by visiting https://mdta.maryland.gov/TunnelRestrictionsAndVehiclePermits.

Vehicles in excess of 13’-6”, in height, or 96” (8 feet) in width are prohibited from using the I-895 Baltimore Harbor Tunnel. I-95 Fort McHenry Tunnel restrictions are height – 14’ - 6” width – 11’.

The MDTA Police Commercial Vehicle Safety Unit (CVSU) diligently monitors these areas to enforce compliance with safety regulations. To report dangerous driving on Maryland toll roads, call MDTA Police Dispatch at (410) 537-7911.